doug1956
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I am 81 hours into the Apollo 15 mission, and have a question about getting a good DOI from the RTCC MFD, but first some quick kudos and thanks. I've learned a lot about space flight, the Apollo program, NASSP, and especially about the value of browsing this forum for answers. Many have had similar problems and questions, and they've been answered by some vy smart people on this forum, including, but not exclusively, indy91 & rcrflyinghokie. Having watched the Apollo program as a youngster, (born in 1956), being able to simulate them to the degree that Orbiter and NASSP affords is the ultimate 'kid in the candy shop' experience. Thanks to all that have made this possible!
OK, after the LOI burn, I'm in an approximately 167.7 x 58.7 nm orbit. In RTCC MFD, I go TAR-LDP, INI I leave as is, optimum azimuth, 50,000 ft, do not simulate powered descent, leave PDI alone, N of 11, DFT 11 min, DFA 16 degrees. MOD is LM Maneuver Sequence, SEQ is DOI, HEI is 60 nm, TH1 is 82:00:00, nearest even hour preceding historical DOI burn. CLC gives me a DOI resulting in a 96.65 x 8.23 nm orbit.
A far cry from the historical 58.4 x 9.6 nm. I'll attach the scn file. So am I missing something obvious? Granted the documentation for the RTCC MFD is a work-in-progress, but it is a great tool, and I've learned a lot about it from experience, and I prefer to figure things out myself, but I'm stumped.
OK, after the LOI burn, I'm in an approximately 167.7 x 58.7 nm orbit. In RTCC MFD, I go TAR-LDP, INI I leave as is, optimum azimuth, 50,000 ft, do not simulate powered descent, leave PDI alone, N of 11, DFT 11 min, DFA 16 degrees. MOD is LM Maneuver Sequence, SEQ is DOI, HEI is 60 nm, TH1 is 82:00:00, nearest even hour preceding historical DOI burn. CLC gives me a DOI resulting in a 96.65 x 8.23 nm orbit.
A far cry from the historical 58.4 x 9.6 nm. I'll attach the scn file. So am I missing something obvious? Granted the documentation for the RTCC MFD is a work-in-progress, but it is a great tool, and I've learned a lot about it from experience, and I prefer to figure things out myself, but I'm stumped.